NHA Certified Clinical Medical Assistant (CCMA)Clinical Patient CareMedium
A medical assistant is performing an electrocardiogram (ECG) on an adult patient. The patient has excessive chest hair. Which of the following actions should the medical assistant take to ensure proper electrode adhesion and minimize artifact?
- APress the electrodes more firmly onto the skin.
- BUse smaller electrodes for better contact.
- CApply extra gel to the electrodes.
- DShave the areas where electrodes will be placed.
Show answer & explanationAnswer & explanation
Correct answer: D. Shave the areas where electrodes will be placed.
Excessive chest hair can interfere with proper electrode adhesion and create artifact on an ECG. Shaving the areas where the electrodes will be placed ensures good skin contact for accurate readings.
Why the other options are wrong
- A. Pressing firmly may temporarily improve contact but doesn't address the underlying issue of hair and can cause patient discomfort.
- B. Smaller electrodes may not adhere as well or cover enough skin surface, and don't solve the hair problem.
- C. Excess gel can cause bridging between electrodes and artifact.
ECG Electrode Placement Prep - Hair
Prior to ECG electrode placement, any excessive hair in the target areas must be removed to ensure optimal skin contact and minimize signal interference (artifact).
- Hair interferes with electrode adhesion.
- Shaving ensures good skin contact.
- Poor contact causes artifact, leading to inaccurate readings.
Memory trick: Clear Signals Need Clean Skin